Word Parts
Define -ectomy
surgical removal
What is bleeding between the conjunctiva and sclera?
subconjunctival hemorrhage
What is inflammation of the sclera?
scleritis
Define vertigo.
sense of whirling, dizziness, and loss of balance, often accompanied with nausea and vomiting
What is the word part for "occurs with aging"
presby/o
What is the word part for iris?
irid/o
removal of vitreous humor
What is the term for excessive sensitivity to light?
photophobia
What is the condition of a ringing, buzzing or roaring sound in the ears?
tinnitus
Define refraction.
bending of light
What is the word ending for hearing?
-cusis
What is visual acuity?
the ability to distinguish objects at a distance
What is the term for when the tissues swell around the eyes?
periorbital edema
Define presbycusis.
gradual loss of sensorineural hearing as the body ages
Name the three stages of acoustic conduction.
air conduction
bone conduction
sensorineural conduction
What does blephar/o mean?
eyelid
Define xeropthalmia and the cause.
dry eye, happens when the tear glands do not produce enough tears
What is the drooping of the upper eyelid and what causes it?
ptosis
possible causes - muscle weakness, paralysis
Define sensorineural hearing loss
nerve deafness, develops when auditory nerve or hair cells in the inner ear are damaged
Name the three auditory ossicles in order from superficial to deep.
malleus/hammer
incus/anvil
stapes/stirrup
What is the word part for cornea?
kerat/o
What does PERRLA stand for?
Pupils are Equal in size, Round, and Reactive to Light and Accommodation
Define presbyopia.
when the lens becomes less flexible and causes vision to become blurry, occurs with age
What is a stapedectomy? What is the function of the device inserted?
the surgical removal of the top portion of the stapes bone and the insertion of a small prosthetic device known as a piston that conducts sound vibrations to the inner ear
Describe the path of light through the eye.
light passes through the cornea, and then the pupil, through the lens, which focuses light through the vitreous humor to the retina, where the image is flipped and sent through the optic nerve to the brain